<template>
  <div class="home">
    <div class="chart" ref="chart"></div>
  </div>
</template>

<script setup>
import * as echarts from 'echarts'
import { ref, onMounted,onBeforeUnmount} from 'vue'
import dayjs from 'dayjs'

// 获取dom
const chart = ref(null)
//echarts 实例对象
let myEchart = null;

const draw = () => {
   myEchart = echarts.init(chart.value);
  const option = {
  title: {
    text: 'Stacked Line'
  },
  tooltip: {
    trigger: 'axis'
  },
  legend: {
    data: ['Email', 'Union Ads', 'Video Ads', 'Direct', 'Search Engine']
  },
  grid: {
    left: '3%',
    right: '4%',
    bottom: '3%',
    containLabel: true
  },
  toolbox: {
    feature: {
      saveAsImage: {}
    }
  },
  xAxis: {
    type: 'category',
    boundaryGap: false,
    data: ['Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun']
  },
  yAxis: {
    type: 'value'
  },
  series: [
    {
      name: 'Email',
      type: 'line',
      stack: 'Total',
  
      data: [120, 132, 101, 134, 90, 230, 210]
    },
    {
      name: 'Union Ads',
      type: 'line',
      stack: 'Total',
      data: [220, 182, 191, 234, 290, 330, 310]
    },
    {
      name: 'Video Ads',
      type: 'line',
      stack: 'Total',
      data: [150, 232, 201, 154, 190, 330, 410]
    },
    {
      name: 'Direct',
      type: 'line',
      stack: 'Total',
      data: [320, 332, 301, 334, 390, 330, 320]
    },
    {
      name: 'Search Engine',
      type: 'line',
      stack: 'Total',
      color:'#000',
      data: [820, 932, 901, 934, 1290, 1330, 1320]
    }
  ]
};
myEchart.setOption(option)
}

onMounted(() => {
  draw()
})


// 监听页面的宽高变化 
const xxx = () => {
    console.log('宽高发生了改变');
    myEchart.resize()
}
window.addEventListener('resize',xxx )
// 销毁页面 取消监听window事件
onBeforeUnmount(()=>{
  window.removeEventListener('resize',xxx)
})


</script>

<style scoped lang="scss">
.home {
  width: 100%;
  height: 100%;
}

.chart {
  width: 100%;
  height: 100%;
}
</style>